JP2019161818A - Photovoltaic power generation device - Google Patents

Abstract

To provide a photovoltaic power generation device capable of efficiently generating power in the photovoltaic power generation device with a solar cell panel having light receiving surfaces on both sides.SOLUTION: The present invention is provided with: a cradle installed on an installation surface; a solar cell panel which is arranged at an upper part of the cradle, and has a first light receiving surface located on the front side and a second light receiving surface located on the rear side; a support part which supports the solar cell panel in a state in which an angle of the solar cell panel can be changed at the upper part of the cradle; and a control part which controls angle change of the solar cell panel by the support part, in which the control part performs the maximum angle control for controlling the angle change of the solar cell panel so that a normal direction of the first light receiving surface of the solar cell panel becomes a direction in which the total power which is the sum of first power which is power to be obtained on the first light receiving surface and second power which is power to be obtained on the second light receiving surface becomes maximum.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a solar power generation apparatus including a solar cell panel having light receiving surfaces on both sides.

  Conventionally, a solar power generation device including a solar cell panel is known (Patent Document 1). For example, as shown in FIG. 13, the solar power generation device includes a solar cell panel 110, a support base 120 that is fixed to the installation surface and fixes the solar cell panel 110 in a posture perpendicular to the installation surface. And a reflecting plate 130 having an arc-shaped cross section that reflects light toward the solar cell panel 110. The photovoltaic power generation apparatus 101 is formed of a shape memory alloy that connects the arm part 140 extending outward in the horizontal direction from the support base 120, the reflector 130 and the arm part 140, and contracts as the temperature rises. Biasing means 150. The solar cell panel 110 is a double-sided light receiving type, and has a light receiving surface on each of the front surface side and the back surface side.

  In this solar power generation device 101, for example, when the urging means 150 is deformed by being warmed by sunlight, the direction of the reflector 130 is changed. Thus, since the reflecting plate 130 tilts according to the incident angle of sunlight, it is supposed that the quantity of the light which injects into the light-receiving surface of the solar cell panel 110 will increase.

Japanese Patent Laid-Open No. 11-354824

  In the solar power generation device, only the incident light (reflected light by the reflection plate 130) on the solar cell panel 110 is increased due to the tilt of the reflection plate 130. Therefore, the solar power generation device has sufficient power generation efficiency. It did not improve.

  An object of this invention is to provide the solar power generation device which can perform an electric power generation efficiently in a solar power generation device provided with the solar cell panel which has a light-receiving surface on both surfaces.

  The solar power generation device of the present invention is a solar panel having a pedestal installed on an installation surface, a first light receiving surface located on the front side, and a second light receiving surface located on the back side, disposed above the gantry. And above the pedestal, in a state where the angle of the solar cell panel can be changed, a support unit that supports the solar cell panel, and a control unit that controls the angle change of the solar cell panel by the support unit, The control unit is a normal direction of the first light receiving surface of the solar cell panel, the first power being the power obtained at the first light receiving surface and the power obtained at the second light receiving surface. The maximum angle control for controlling the angle change of the solar cell panel is performed so that the total power, which is the sum of the second power, becomes a maximum direction.

  According to such a configuration, the normal direction of the first light receiving surface of the solar cell panel is the direction that maximizes the total sum of the power generated on both surfaces, so that power generation can be performed efficiently.

  In addition, the control unit, before the maximum angle control, at least the azimuth angle direction of the first light receiving surface of the solar cell panel so that the azimuth angle direction of sunlight coincides with the azimuth angle direction of sunlight. Incident angle control for controlling the change in the azimuth angle of one light receiving surface may be performed.

  According to such a configuration, since the maximum angle control is performed after the incident angle control for controlling the azimuth angle of the first light receiving surface of the solar cell panel, the control for maximizing the total power generated by the solar cell panel is quick. To be done.

  Furthermore, in the solar power generation device, the control unit is configured so that the normal direction of the first light receiving surface of the solar cell panel matches the incident direction of sunlight before the maximum angle control. Incident angle control for controlling the change of the angle of the first light receiving surface of the panel is performed, and after the incident angle control, in the maximum angle control, at least the elevation angle of the first light receiving surface of the solar cell panel with respect to the installation surface You may control the change of the elevation angle of the said 1st light-receiving surface of the said solar cell panel so that a direction may be set as the direction in which the said total electric power becomes the maximum.

  According to such a configuration, the solar cell panel elevation angle (elevation angle of the solar cell panel with respect to the installation surface) after the incident angle control for matching the normal direction of the light receiving surface of the solar cell panel with the incident direction of sunlight is the solar cell. Since the maximum angle control is performed to match the angle at which the total power on both sides of the panel is maximized, the control that maximizes the total power generated by the solar cell panel is performed quickly and reliably.

  Furthermore, the solar power generation apparatus includes a reflector disposed below the solar cell panel, and the surface of the reflector is a surface coated with a highly solar reflective paint, a curved surface, an inclined surface, and It may include at least one of the mirror-finished surfaces.

  According to such a configuration, when the surface of the reflector includes a surface with a high solar reflective paint applied or a surface with a mirror finish, the surface with a high solar reflective paint applied or a surface with a mirror finish is provided. More light of the incident sunlight is reflected to the solar cell panel. Further, when the surface of the reflecting plate includes a curved surface or an inclined surface, the curved surface or the inclined surface reflects sunlight at an angle different from the incident angle, in other words, diffusely reflects the sunlight. More light is reflected by the light receiving surface. Thus, since the surface of a reflecting plate reflects sunlight efficiently in the 1st light-receiving surface of a solar cell panel, or a 2nd light-receiving surface, electric power generation can be performed still more efficiently.

  As mentioned above, according to this invention, in a solar power generation device provided with the solar cell panel which has a light-receiving surface on both surfaces, the solar power generation device which can perform electric power generation efficiently can be provided.

FIG. 1 is a side view showing a configuration of a photovoltaic power generation apparatus when the elevation angle of the first light receiving surface of the solar battery panel of the photovoltaic power generation apparatus according to the present embodiment is 90 °. FIG. 2 is a perspective view showing the configuration of the photovoltaic power generator when the elevation angle of the first light receiving surface of the solar cell panel is 90 °. FIG. 3 is a side view showing the configuration of the photovoltaic power generation apparatus when the elevation angle of the first light receiving surface of the solar cell panel is 45 °. FIG. 4 is a side view showing the configuration of the photovoltaic power generator when the elevation angle of the first light receiving surface of the solar cell panel is 0 °. FIG. 5 is a block diagram showing each configuration of the photovoltaic power generation apparatus. FIG. 6 is a flowchart for explaining the control of the photovoltaic power generation apparatus. FIG. 7 is a plan view showing the configuration of the photovoltaic power generation apparatus when the elevation angle of the first light receiving surface of the solar battery panel of the photovoltaic power generation apparatus according to the modification is 90 °. FIG. 8 is a side view showing the configuration of the photovoltaic power generation apparatus when the elevation angle of the first light receiving surface of the solar battery panel of the photovoltaic power generation apparatus according to the modification is 0 °. FIG. 9 is a side view showing the configuration of the photovoltaic power generator when the elevation angle of the first light receiving surface of the solar cell panel according to the modification is 90 °. FIG. 10 is a side view showing the configuration of the photovoltaic power generation apparatus when the elevation angle of the first light receiving surface of the solar cell panel according to the modification is 45 °. FIG. 11 is a side view showing the configuration of the photovoltaic power generator when the elevation angle of the first light receiving surface of the solar cell panel according to the modification is 0 °. FIG. 12 is a side view for explaining the reflected light in the solar power generation device when the elevation angle of the first light receiving surface of the solar cell panel according to the modification is 0 °. FIG. 13 is a side view showing a configuration of a conventional solar power generation device.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  The photovoltaic power generation apparatus 1 according to the present embodiment includes a gantry 3 installed on the installation surface 2, a solar cell panel group 4 installed above the gantry 3 (above the paper surface in FIGS. 1 to 4), and the gantry 3. The support part 5 which supports the solar cell panel group 4 is provided above. Moreover, the solar power generation device 1 is provided with the control part 6 which controls the angle change by the support part 5 (refer FIG. 5). Furthermore, the solar power generation device 1 includes a reflector 7 installed below the solar cell panel group 4 (see FIGS. 1 to 4). The solar power generation device 1 includes three solar cell panel groups 4. Each of the solar cell panel groups 4 has a double-sided light receiving solar cell panel. Specifically, since each of the solar cell panel groups 4 includes three solar cell panels arranged in the Y-axis direction, the solar cell panels included in the solar power generation device 1 of the present embodiment are nine. . Each solar cell panel has a first light receiving surface 41 located on the front side and a second light receiving surface 42 located on the back side. Hereinafter, a desired direction along the installation surface 2 is defined as an X-axis direction in the orthogonal coordinate system, and a direction orthogonal to the X-axis direction and along the installation surface 2 is defined as a Y-axis direction in the orthogonal coordinate system (see FIG. 2). A direction (vertical direction) orthogonal to the installation surface 2 is defined as a Z-axis direction.

  The gantry 3 is installed on a horizontal installation surface 2 such as a ground surface or a concrete floor surface, for example. The gantry 3 of the present embodiment includes a gantry frame portion 30 having a polygonal shape (for example, a regular octagonal shape) as viewed in the Z-axis direction, a reinforcing portion 31 disposed inside the gantry frame portion 30, and the gantry frame portion 30. Leg portions 32 extending from the outer peripheral surface. Further, the gantry 3 is in contact with the installation surface 2 on the lower surfaces of the gantry frame portion 30, the reinforcing portion 31, and the leg portion 32.

  The reinforcing portion 31 is a rod-shaped member extending from each corner of the gantry frame portion 30 toward the center of the gantry frame portion 30. Moreover, the edge located inside the reinforcement part 31 is following the circumferential direction in Z-axis planar view. The edge located inside the reinforcing portion 31 is located in the center of the gantry frame portion 30 and defines a through-hole penetrating in the Z-axis direction. The leg portion 32 includes a flat plate-like fixing portion 320 extending on the installation surface 2 and a connection portion 321 that extends in the Z-axis direction and connects the outer peripheral surface of the gantry frame portion 30 and the fixing portion 320.

  The support part 5 is an angle of a solar cell panel included in the solar cell panel group 4 (for example, an azimuth angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 or a solar cell panel group with respect to the installation surface 2. The solar cell panel group 4 is supported in a state in which the elevation angle of the first light receiving surface 41 of the solar cell panel included in 4 can be changed. Moreover, the support part 5 can change the azimuth | direction angle of the 1st light-receiving surface 41 of the solar cell panel group 4, for example by making a vertical axis | shaft (site | part extended in a Z-axis direction) into a rotation center. Furthermore, the support part 5 can change the elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 with the horizontal axis (part extending in the X-axis direction or the Y-axis direction) as the rotation center, for example. It is.

  The support portion 5 of the present embodiment includes a first support portion 51 disposed on the gantry 3 and a second support portion 52 disposed between the first support portion 51 and the solar cell panel group 4. . The 1st support part 51 can change the azimuth | direction angle of the 1st light-receiving surface 41 of the solar cell panel contained in the solar cell panel group 4, for example by making a vertical axis | shaft into a rotation center. The 2nd support part 52 can change the elevation angle of the 1st light-receiving surface 41 of the solar cell panel contained in the solar cell panel group 4, for example by making a horizontal axis into a rotation center. In the support portion 5, the change in the azimuth angle of the first light receiving surface 41 by the first support portion 51 and the change in the elevation angle of the first light receiving surface 41 by the second support portion 52 can be performed independently of each other. Moreover, in the support part 5, the attitude | position of the 1st support part 51 and the 2nd support part 52 can change mutually independently.

  For example, the first support portion 51 has a cylindrical shape when viewed in the Z-axis direction, and has an upper end surface (an end surface located on one side in the Z-axis direction) and a lower end surface (an end surface located on the other side in the Z-axis direction), respectively. A frame part 510 having a bowl shape spreading outward as viewed in the Z-axis direction, a wheel part 511 extending downward from a plurality of positions (for example, eight places) on the lower end surface of the frame part 510, and a frame part 510 A plate part 512 having a through-hole penetrating in the Z-axis direction, which is a rectangular plate-shaped member that extends in the XY plane (a plane including the X-axis direction and the Y-axis direction), and a through-hole of the plate part 512 And a shaft portion 513 inserted in the Z-axis direction up to the through hole of the gantry 3. The first support portion 51 includes an electric motor (first actuator) that can rotate the frame portion 510 about the shaft portion 513 as a rotation axis, and a rotation detector (for example, a potentiometer) that can detect the position of the frame portion 510. And). In the first support part 51, the wheel part 511 moves along the upper surface of the gantry frame part 30 when the frame part 510 rotates, so that the first support part 51 is smooth with respect to the gantry frame part 30. Move to.

  The second support portion 52 has one end portion connected to the frame portion 510 and the plate portion 512 of the first support portion 51 and the other end portion connected to the solar cell panel group 4 and the installation surface 2. Link portion 521 that can change the angle of each solar cell panel group 4 (elevation angle of the solar cell panel) at once (linkable and changeable linked) and connection connected to link portion 521 A portion 522, an electric cylinder (second actuator) 523 having one end connected to the plate portion 512 of the first support portion 51 and the other end connected to the connection portion 522, and a plate connected to the connection portion 522 And a base portion 524 (see FIGS. 1, 3, and 4) fixed to the portion 512.

  The main body part 520 is a bar-like part extending from each corner of the plate part 512 of the first support part 51 to each solar cell panel group 4. Specifically, the main body portion 520 extends from each corner portion of the plate portion 512 of the first support portion 51 through the reflection plate 7 to each solar cell panel group 4. One end of the main body portion 520 in the extending direction is fixed to each corner of the plate portion 512. The central portion of the main body portion 520 in the extending direction is fixed to the reflecting plate 7 to fix the position of the reflecting plate 7 in the Z-axis direction. The other end portion of the main body portion 520 in the extending direction is fixed to the solar cell panel group 4 to fix the position of the solar cell panel group 4 in the Z-axis direction.

  The electric cylinder 523 has a substantially long shape and can be expanded and contracted in the long direction. The electric cylinder 523 of the present embodiment includes a fully extended first state (see FIG. 1), a moderately contracted second state (see FIG. 3), and a fully contracted third state (see FIG. 4). ) Can be continuously expanded and contracted. In other words, the electric cylinder 523 can be expanded and contracted to a desired length between the first state and the third state. The electric cylinder 523 of this embodiment is provided with a stroke length sensor that can detect the state of the electric cylinder 523 (the length of the electric cylinder 523 in the longitudinal direction).

  The connection part 522 is a bar-like part extending from the other end of the electric cylinder 523 (the other end located on the side opposite to the one end connected to the plate part 512 of the electric cylinder 523) to the link part 521. Moreover, the connection site | part 522 is connected to the base site | part 524 in the center part in the extending | stretching direction. The connection part 522 is rotatable about a rotation shaft 5220 that is a connection part with the base part 524. Specifically, the connection portion 522 can rotate from 0 ° to approximately 90 ° in the clockwise direction in FIGS. 1, 3, and 4 about the rotation shaft 522. More specifically, when the electric cylinder 523 is in the second state (see FIG. 3), the rotation angle of the connection portion 522 is 0 ° when the electric cylinder 523 is in the first state (see FIG. 1). When the electric cylinder 523 is in the third state (see FIG. 4), the angle is approximately 90 °.

  The link part 521 connects the main body region 5210 connected to the connection part 522, the three support regions 5211 that respectively support the solar cell panel groups 4a, 4b, and 4c, and the main body region 5210 and each support region 5211. A connection region 5212. The support region 5211 of the present embodiment fixes the solar cell panel group 4 in a state where the orientation of the solar cell panel group 4 is fixed. The main body region 5210 of the present embodiment has a rectangular frame-shaped portion and a rod-shaped portion that is arranged at the center in the long direction and extends in the short direction. The main body region 5210 of this embodiment is provided with a solar radiation sensor that detects the amount of solar radiation. The connection region 5212 of the present embodiment is connected to a portion located at both ends in the longitudinal direction of the rectangular frame shape of the main body region 5211 and a rod-like portion disposed at the center in the longitudinal direction. In addition, the connection region 5212 of the present embodiment can be rotated about the connection point with the main body region 5210 as a rotation axis, and is fixed to the support region 5211. With such a configuration, the link part 521 of the present embodiment supports the solar cell panel group 4 at a position orthogonal to the connection region 5212.

  The posture of the link part 521 of this embodiment changes according to the expansion and contraction of the electric cylinder 523. Specifically, when the electric cylinder 523 is in the first state (see FIG. 1), the rotation angle of the connection portion 522 is 0 °, and therefore the posture of the link portion 521 is the other end in the main body region 5210 in the X-axis direction. The connection area 5212 is in a posture along the installation surface 2 while retracting to the side. Further, when the electric cylinder 523 is in the second state (see FIG. 3), the rotation angle of the connection portion 522 is 45 °, and therefore, the posture of the link portion 521 is 45 ° of the main body region 5210 of the connection portion 522. While moving forward to the center position in the X-axis direction, the connection region 5212 is inclined 45 ° with respect to the installation surface 2. Further, when the electric cylinder 523 is in the third state (see FIG. 4), the rotation angle of the connection part 522 is 90 °, and therefore the posture of the link part 521 is 90 ° of the main body region 5210 of the connection part 522. While moving forward to one end side in the X-axis direction, the connection region 5212 is in a posture orthogonal to the installation surface 2.

  With the above configuration, the support unit 5 changes the azimuth angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 with the vertical axis as the center of rotation, and the solar cell panel with the horizontal axis as the center of rotation. The elevation angle of the first light receiving surface 41 of the solar cell panels included in the group 4 can be changed. Specifically, the support part 5 rotates the frame part 510 about the axis part 513 of the first support part 51 as a rotation axis, so that the solar cell panel included in the solar cell panel group 4 about the axis part 513 as the rotation center. The azimuth angle of the first light receiving surface 41 can be changed. Moreover, the elevation angle of the 1st light-receiving surface 41 of the solar cell panel contained in the solar cell panel group 4 can be changed centering | focusing on the connection area | region 5212 by extending / contracting the electric cylinder 523 of the 2nd support part 52. FIG.

  Each of the solar cell panels included in the solar cell panel group 4 of the present embodiment is provided with a sensor that detects electric power generated by power generation. Specifically, the solar cell panel included in the solar cell panel group 4 is provided with a sensor for detecting a current voltage and current by power generation of the solar cell panel.

  In the solar cell panel group 4 of the present embodiment, the frame portion 510 of the first support portion 51 rotates, so that the solar cell panels included in the three solar cell panel groups 4a, 4b, and 4c arranged in the X-axis direction. The azimuth angle (direction in which the solar cell panel groups 4a, 4b, and 4c face) of the first light receiving surface 41 changes collectively. Furthermore, in the solar cell panel group 4 of the present embodiment, the first light receiving surface 41 of the solar cell panel included in the three solar cell panel groups 4a, 4b, and 4c is obtained by extending and contracting the electric cylinder 523 as described above. The elevation angle of all changes at once (changes at once). Specifically, the azimuth angle of the first light receiving surface 41 of the solar cell panels included in the solar cell panel groups 4a, 4b, and 4c is set to be northeast (45 °) (the imaginary line extending from the axial part 513 of the frame part 510 toward the predetermined part of the frame part 510 toward the northeast), the azimuth angle of the predetermined part of the frame part 510 is south (180 °). ), The azimuth angle of a predetermined part of the frame part 510 is northwest (315 °), and the frame part 510 is rotated 270 ° about the shaft part 513, so that the frame part 510 is rotated from the northeast to the south. It changes to the northwest after passing. Further, the elevation angle of the first light receiving surface 41 of the solar cell panels included in the solar cell panel groups 4a, 4b, and 4c is such that the connection region 5212 is the installation surface 2 when the electric cylinder 523 is in the first state (see FIG. 1). Since both are 90 °, and when the electric cylinder 523 is in the second state (see FIG. 3), the connection region 5212 is inclined 45 ° with respect to the installation surface 2 and both 45 When the electric cylinder 523 is in the third state (see FIG. 4), the connection region 5212 is orthogonal to the installation surface 2, and both are 0 °.

  The reflection plate 7 is formed by, for example, bending a rectangular plate material on both sides in the short direction (see FIG. 3). For example, the reflecting plate 7 is fixed in a posture inclined by 45 ° with respect to the installation surface 2. The position of the reflecting plate 7 in the Z-axis direction is fixed with respect to the support portion 5, for example. The reflection plate 7 of the present embodiment is located at the center portion 71 located in the center in the short direction and on both sides of the center portion 71 in the short direction, and away from the solar cell panel group 4 with respect to the center portion 71. And an end portion 72 which is inclined to the outside. The width of the reflecting plate 7 in the Y-axis direction (short direction) is narrower than the width of the solar cell panels included in the solar cell panel group 4 in the Y-axis direction. The central portion 71 and the end portion 72 each have a flat shape.

  Specifically, the reflectance of sunlight is high on the surface 73 of the reflection plate 7 (the surface (back surface) 74 opposite to the surface 74 facing the installation surface 2, the surface 73 located on the solar cell panel group 4 side). Paint (high solar reflective paint) is applied. Examples of the paint include paints having a high light reflectance (silver, white, yellow, light gray, light blue, etc.), various fluorescent paints, paints including hollow beads, and the like.

  As shown in the block diagram of FIG. 5, the control unit 6 of the present embodiment includes the electric motor and rotation detector of the first support unit 51, the electric cylinder 523 of the second support unit 52, and the solar cell panel group 4. Each is connected to a power sensor. In addition, the control part 6 of this embodiment is provided in the back side (opposite side to the solar cell panel group 4) of the reflecting plate 7 in the support part 5. FIG.

  The control part 6 of this embodiment controls the angle of the solar cell panel contained in the solar cell panel group 4 by automatic control. In the automatic control, the control unit 6 first receives the first light received by the support unit 5 so that the azimuth angle direction of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 is the incident direction of sunlight. A sunrise process (incident angle control) for controlling the change of the azimuth angle of the surface 41 is performed. Further, the control unit 6 controls the azimuth angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 and is included in the solar cell panel group 4 in the daylighting process (incident angle control). The change of the elevation angle of the first light receiving surface 41 by the support portion 5 is controlled so that the elevation angle direction of the first light receiving surface 41 of the solar cell panel matches the elevation angle direction of sunlight. In other words, the normal direction of the first light receiving surface 41 of the solar cell panels included in the solar cell panel group 4 (the normal direction consisting of the azimuth angle direction of the first light receiving surface 41 and the elevation angle direction of the first light receiving surface 41). The change of the azimuth angle and elevation angle of the first light receiving surface 41 by the support unit 5 is controlled so as to coincide with the incident direction of sunlight (incident direction consisting of the azimuth angle direction and the elevation angle direction of sunlight). The azimuth angle direction of the first light receiving surface 41 is a direction in the XY plane. The elevation angle direction of the first light receiving surface 41 is a direction in the XZ plane or a direction in the YZ plane.

  Furthermore, the control unit 6 performs the sunrise process (incident angle control) in the automatic control, and then, as necessary, the normal direction of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 So that the total power, which is the sum of the first power that is the power obtained at the first light-receiving surface 41 and the second power that is the power obtained at the second light-receiving surface 42, is in the direction that maximizes. 5 (first support part 51 and second support part 52) performs maximum angle control for controlling the angle change of the solar battery panel included in the solar battery panel group 4. Specifically, the control unit 6 adjusts the angle of elevation and azimuth of the solar cell panels included in the solar cell panel group 4 so that the maximum power generation amount is obtained (for example, the maximum power generation amount is Maximum angle control, which is follow-up control for adjusting the elevation angle and azimuth angle of the solar cell panel to follow the movement of the sun so as to be obtained. More specifically, the control unit 6 of the present embodiment controls the rotation of the frame part 510 by the electric motor of the first support part 51, thereby changing the azimuth angle of the frame part 510, so that the solar cell panel group The azimuth angle direction of the first light receiving surface 41 of the solar cell panel included in 4 is the direction in which the total power is maximized. Moreover, the control part 6 of this embodiment changes the attitude | position of the connection site | part 522 (rotation angle of the connection site | part 522) by expanding / contracting the electric cylinder 523, and is included in the solar cell panel group 4. The elevation angle of the first light receiving surface 41 is changed, and the elevation direction of the first light receiving surface 41 of the solar cell panels included in the solar cell panel group 4 is set as the direction in which the total power is maximized.

  The control unit 6 of the present embodiment includes a processing unit 60 that performs acquisition and output of various types of information and computations, and a storage unit 61 that can store various types of information. Specifically, the control unit 6 includes a router (for example, an M2M (Machine to Machine) router) for connecting to the Internet, a control controller (an input / output unit that acquires and inputs information, a calculation unit, a storage unit, an alarm (a gantry) 3 and control unit including a detection unit and the like, a touch panel monitor (a touch panel monitor capable of operation, setting, and monitoring), an azimuth angle controller (first) A controller capable of controlling the support portion 51) and an elevation angle controller (a controller capable of controlling the second support portion 52). When the controller in the control unit 6 detects, for example, an abnormality in driving of the gantry 3 or the support unit 5 or an abnormality in the amount of power generation by the alarm detection unit, an email indicating this abnormality is sent via the Internet to the solar power generation device 1. It is transmitted to various terminals possessed by the person in charge in charge of the operation. The control unit 6 also holds information regarding the current time. The various types of information that can be stored in the storage unit 61 include the parameters of the installation location of the solar cell panel (for example, the latitude, longitude, and altitude information of this installation location), the time when the predetermined processing was performed last time, the actual solar cell panel There are upper limit set values of deviations between the azimuth angle and elevation angle and the target azimuth angle and elevation angle, the calculation result by the processing unit 60, and the like. The processing unit 60 of the present embodiment holds time information (current date / time information). Further, the processing unit 60 of the present embodiment detects an input related to on / off of automatic control via the touch panel of the control unit 6 and an input related to on / off of automatic control via the Internet from a terminal (tablet, smartphone, personal computer, etc.). To do. Normally, automatic control continues to be executed, but is terminated when an abnormality such as a typhoon occurs. Hereinafter, a series of control by the control part 6 is demonstrated using the flowchart of FIG.

  When detecting the input for starting the automatic control, the processing unit 60 turns on the automatic control (step S1), acquires the parameter of the installation location of the solar cell panel, and stores it in the storage unit 61 (step S2). Next, the processing unit 60 calculates the current position (latitude, longitude, altitude) of the sun based on the time information (step S3) and stores it in the storage unit 61, and the calculated sun altitude is from 0 °. Is also larger (step S4). Note that the processing unit 60 causes the storage unit 61 to store the altitude of the sun obtained by executing the previous step S3 in addition to the altitude of the sun obtained by executing step S3 this time.

  When the altitude of the sun is greater than 0 ° (Yes in step S4), the processing unit 60 determines whether or not the sun is rising (step S5). Specifically, the processing unit 60 has, for example, the sun altitude obtained by executing step S3 last time is 0 ° or less and the sun altitude obtained by executing step S3 this time is 0 °. If it is larger than that, it is determined that it falls under hiji. On the other hand, when both the solar altitude obtained by executing step S3 last time and the solar altitude obtained by executing step S3 this time are both greater than 0 °, the processing unit 60 , Judgment not applicable to Hiji. If the processing unit 60 determines that it is sunrise (Yes in step S5), it performs a sunrise process (incident angle process) (step S6).

  The processing unit 60 of the present embodiment is configured such that, in the daylighting process, at least the azimuth angle direction of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 is the azimuth angle direction of sunlight (sunlight incident direction). 1st support part 51 is controlled so that it may correspond to an azimuth | direction angle component (horizontal direction) among them (it is set as a parallel direction). More specifically, the processing unit 60 rotates the frame part 510 around the shaft part 513 of the first support part 51 in the sunning process, and the first solar cell panel included in the solar cell panel group 4 is rotated. The electric motor of the first support portion 51 is controlled so that the azimuth direction of the light receiving surface 41 matches the azimuth direction (horizontal direction) of sunlight. In addition, the processing unit 60 controls the azimuth angle of the first light receiving surface 41 of the solar cell panel as the daylighting process, and the elevation angle direction of the first light receiving surface 41 of the solar cell panel is the elevation angle of the incident direction of sunlight. The elevation angle of the first light receiving surface 41 is controlled by the electric cylinder 523 of the second support portion 52 so as to coincide with the direction. In other words, in the processing unit 60, the azimuth angle direction and the elevation angle direction in the normal direction of the first light receiving surface 41 of the solar cell panel respectively match the azimuth angle component (horizontal direction) and the elevation angle direction in the incident direction of sunlight. Thus, the change of the angle of the first light receiving surface 41 by the support portion 5 is controlled.

  Next, the processing unit 60 determines the deviation of the azimuth angle of the first light receiving surface 41 of the solar cell panels included in the solar cell panel group 4 based on the current position of the sun (the first light reception acquired by the rotation detector). The deviation between the actual azimuth angle of the surface 41 and the azimuth angle of the first light receiving surface 41 that coincides with the azimuth direction of sunlight) and the elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 Deviation (when the actual elevation angle of the first light receiving surface 41 calculated from the length of the electric cylinder 523 acquired by the stroke length sensor matches the incident direction of sunlight and the normal direction of the first light receiving surface 41) (Deviation from the elevation angle of the first light receiving surface 41) is calculated (step S7). The processing unit 60 determines whether or not the two deviations obtained by the calculation are both within the upper limit set value that is preset and stored in the storage unit 61 (step S8).

  If it is determined that the deviation of the azimuth angle or elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 obtained by calculation is outside the upper limit set value (No in step S8), the first Of the azimuth angle and elevation angle of the one light receiving surface 41, the one deviating from the upper limit set value is driven within the upper limit set value by driving the electric motor of the first support portion 51 and the electric cylinder 523 of the second support portion 52. As described above, the process of correcting the azimuth angle and elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 (step S9) is a deviation of the azimuth angle and elevation angle of the first light receiving surface 41 obtained by calculation. Are repeated until both are within the upper limit set value (steps S7, S8, S9).

  When the deviation of the azimuth angle and elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 obtained by calculation is within the upper limit set value (Yes in step S8), the processing unit 60 It is determined whether or not the current time is a scanning timing (step S10). Specifically, when there is no information about the previous scan time, the processing unit 60 determines that the current process is the first scan and that it is a scan timing. Further, the processing unit 60 determines that it is time to scan even when a set time (arbitrary time, for example, about 3 to 5 minutes) has elapsed since the previous scan time. On the other hand, when the set time has not elapsed since the previous scan time, the processing unit 60 determines that it is not the scan timing.

  When determining that it is time to scan (Yes in Step S10), the processing unit 60 determines whether the amount of solar radiation is equal to or greater than a certain level (Step S11). Specifically, the processing unit 60 determines whether or not the amount of solar radiation is a certain value or more based on the amount of solar radiation detected by the solar radiation sensor.

  When the processing unit 60 determines that the amount of solar radiation is equal to or greater than a certain level (Yes in step S11), the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 that performs the scanning process and has the maximum power generation amount. The target elevation angle is calculated (step S12). Specifically, the processing unit 60 performs the scan processing by the orientation (angle, for example, of the first light receiving surface 41) of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 directed by the incident angle control. The target angle that maximizes the total amount of power generated when the elevation angle and the elevation angle and azimuth angle of the first light receiving surface 41 are changed from the reference angle by a predetermined angle (hereinafter referred to as a scan angle). And the angle of the first light receiving surface 41 is changed to the derived target angle. In addition, when the processing unit 60 derives the target angle, the processing unit 60 sets the first solar cell panel included in the solar cell panel group 4 by a predetermined angle on the side where the reference angle becomes larger (plus side) or the side where it becomes smaller (minus side). The angle of one light receiving surface 41 is changed.

  More specifically, the processing unit 60 performs, as a scanning process, the current elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 (the incident direction of sunlight and the normal line of the first light receiving surface 41). The elevation angle is continuously changed by a scan angle (for example, 5 °) from the elevation angle adjusted to the elevation angle of the first light-receiving surface 41 when the directions coincide with each other to the side where the elevation angle becomes larger and the side where the elevation angle becomes smaller (for example, 5 °). For example, in the process of changing the elevation angle by controlling the electric cylinder 523 of the second support portion 52 so that the elevation angle is changed from 40 ° to 50 ° when the reference angle is 45 ° and the scan angle is 5 °. For example, by the power sensor (for example, a voltage sensor or a battery sensor) provided in the solar cell panel group 4, the power generation amount and the second light reception at the first light receiving surface 41 in the solar cell panel included in the solar cell panel group 4. The amount of power generation on the surface 42 is acquired every time the elevation angle is changed by 1 °. The processing unit 60 is a total amount of power generation at the first light receiving surface 41 and the second light receiving surface 42 for each elevation angle of the solar cell panels included in the solar cell panel group 4 (first power obtained at the first light receiving surface 41). The total power that is the sum of the first power and the second power that is the power obtained at the second light receiving surface 42 is stored (for example, plotted), and the elevation angle (the amount of power generation) at which the total power becomes the maximum among the stored power Elevation angle at which the total amount reaches a peak) is derived as a target elevation angle at which total power is obtained. The processing unit 60 controls the electric cylinder 523 of the second support unit 52 so that the derived target elevation angle matches the elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 (step S13). ).

  As described above, the processing unit 60 performs the maximum angle control (for example, at least in the solar cell panel group 4) for controlling the support unit 5 so that the total power becomes the angle at which the total power becomes the maximum in steps S12 and S13. When the maximum angle control for controlling the control unit 6 so as to set the elevation angle of the first light receiving surface 41 of the included solar cell panel to the angle at which the total power becomes the maximum is determined, it is determined whether or not the automatic control is terminated ( Step S14). The processing unit 60 determines to end the automatic control when detecting an input through the touch panel for ending the automatic control or an input through the Internet.

  When the automatic control is not finished (No in Step S14), the processing unit 60 returns to Step S3 and repeats the automatic control (Step S3 to Step S14) until the automatic control is finished. On the other hand, when ending automatic control (Yes in Step S14), processing unit 60 turns off automatic control and ends a series of controls.

  The processing unit 60 determines that it is not time to scan (No in S10) or determines that the amount of solar radiation is less than a certain amount (No in Step S11, for example, because the weather is cloudy or rainy). Since the amount of solar radiation is small, the normal direction of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 changes from the elevation angle of the first light receiving surface 41 to the target elevation angle when it coincides with the incident direction of sunlight. If it is assumed that the total power increased due to this change is less than the power required to calculate the target elevation angle), the process proceeds to the determination of whether or not to end automatic control (step S14). Repeat automatic control if necessary.

  If the altitude of the sun is 0 ° or less (No in step S4), the processing unit 60 determines whether it is sunset (step S16). Specifically, the processing unit 60, for example, has a sun altitude obtained by executing step S3 last time greater than 0 ° and the sun altitude obtained by executing step S3 this time is 0 ° or less. In some cases, when it is determined that it corresponds to sunset, both the altitude of the sun obtained by executing step S3 last time and the altitude of the sun obtained by executing step S3 this time are 0 ° or less. Therefore, it is judged that it does not correspond to sunset. When determining that it is sunset (Yes in step S4), the processing unit 60 performs sunset processing (step S7). Specifically, in the sunset process, the processing unit 60 controls the support unit 5 so that the azimuth and elevation angles of the first light receiving surfaces 41 of the solar cell panels included in the solar cell panel group 4 are in a standby state. The standby state means, for example, that the azimuth angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 faces south, and the first light receiving surface of the solar cell panel included in the solar cell panel group 4 In this state, the elevation angle of 41 is 180 ° (the first light receiving surface 41 is in a horizontal orientation with respect to the installation surface 2). Further, the processing unit 60 proceeds to the determination (step S14) as to whether or not to end the automatic control, and repeats the automatic control as necessary.

  According to the solar power generation device 1 described above, the angle of the solar cell panels included in the solar cell panel group 4 is an angle that maximizes the sum of the electric power generated in the first light receiving surface 41 and the second light receiving surface 42. Therefore, power generation can be performed efficiently.

  Moreover, in the solar power generation device 1 of this embodiment, since maximum angle control is performed after the incident angle control which controls the azimuth angle of the 1st light-receiving surface 41 of the solar cell panel contained in the solar cell panel group 4, the solar Control that maximizes the total amount of power generated by the battery panel is quickly performed.

  Furthermore, in the solar power generation device 1 of the present embodiment, after the incident angle control for matching the normal direction of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 with the incident direction of sunlight, The elevation angle of the first light receiving surface 41 of the solar cell panel included in the battery panel group 4 (the angle of the first light receiving surface 41 with respect to the installation surface 2) is the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4. In addition, since the maximum angle control is performed to match the angle at which the total sum of power on the second light receiving surface 42 is maximized, the control that maximizes the total sum of power generated by the solar cell panel is performed quickly and reliably.

  In the solar power generation device 1 of this embodiment, when the surface 73 of the reflecting plate 7 includes a surface to which a high solar reflective paint is applied, the surface to which the high solar reflective paint is applied is more than the incident sunlight. A lot of light is reflected to the solar panel. Thus, since the surface 73 of the reflecting plate 7 efficiently reflects sunlight on the first light receiving surface 41 and the second light receiving surface 42 of the solar cell panel, power generation can be performed more efficiently.

  In the solar power generation device 1 of this embodiment, when the amount of solar radiation is as small as a certain amount or less, the normal direction of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 and the incident direction of sunlight Assuming that the total power is assumed to be maximum when the values match (for example, when the weather is cloudy or raining, No in step S11), the total power of the solar cell panels included in the solar cell panel group 4 becomes maximum. Maximum angle control for controlling the support portion 5 to be an angle (a control process for deriving a target elevation angle or a control for adjusting the elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 to the target elevation angle ( Steps S12 and S13)) are not performed, so even in such a case, the power required for controlling the angle of the solar cell panel can be increased while efficiently generating power compared to the configuration in which the maximum angle control is performed. It can be reduced.

  Moreover, in the solar power generation device 1 of this embodiment, it is assumed that the elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 is likely to be the maximum total power. After “the angle at which the normal direction of the first light receiving surface 41 of the solar panel included in the battery panel group 4 coincides with the incident direction of sunlight” (incident angle control, steps S7 to S9), Is the maximum angle (maximum angle control, steps S12 and S13), the elevation angle of the solar cell panel included in the solar cell panel group 4 is defined as the normal direction of the first light receiving surface 41 and the incident direction of sunlight. The power required for the maximum angle control can be reduced as compared with the configuration in which the maximum angle control is performed after the angles are different from each other.

  Furthermore, in the solar power generation device 1 of this embodiment, since the reflecting plate 7 is formed by bending a plate material (for example, the solar cell panel in which the end portion 72 is included in the solar cell panel group 4 compared to the central portion 71). Therefore, the amount of reflected light in the reflecting plate 7 can be increased compared to a configuration in which the reflecting plate 7 is not curved. Moreover, since the reflecting plate 7 is bent in this way, even if the width of the reflecting plate 7 is narrower than the width of the solar cell panel, the reflected light in the reflecting plate 7 is compared with the configuration in which the reflecting plate 7 is not curved. Can be secured.

  Further, in the solar power generation device 1 of the present embodiment, the processing unit 60 sets the azimuth angle and the elevation angle of the first light receiving surface 41 of the solar cell panel group 4 in the standby state (the azimuth of the first light receiving surface 41 in the sunset process). In order to set the angle to the south and the elevation angle of the first light receiving surface 41 to 180 ° (a state in which the first light receiving surface 41 is horizontal with the installation surface 2), for example, a strong wind blows at night Even so, it is possible to prevent the solar cell panel group 4 from being loaded by a strong wind.

  In addition, the solar power generation device of this invention is not limited to the said embodiment, Of course, it can add various changes within the range which does not deviate from the summary of this invention. For example, the configuration of another embodiment can be added to the configuration of a certain embodiment, and a part of the configuration of a certain embodiment can be replaced with the configuration of another embodiment. Furthermore, a part of the configuration of an embodiment can be deleted.

  For example, in the solar power generation device 1 of the above embodiment, the control unit 6 changes the elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 in the maximum angle control. Only the azimuth angle of the first light receiving surface 41 of the solar cell panel included in the panel group 4 is changed, or both the elevation angle and the azimuth angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 are changed. You may let them. Moreover, in the solar power generation device 1 of the said embodiment, although the control part 6 performed maximum angle control after performing incident angle control, you may perform only maximum angle control, without performing incident angle control. . Further, in the solar power generation device 1 of the above embodiment, both the azimuth angle and the elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 are controlled in the incident angle control. What is necessary is just to control the azimuth angle of the 1st light-receiving surface 41 of the solar cell panel contained in the battery panel group 4. FIG. Moreover, in the solar power generation device 1 of the said embodiment, although the sunset process was performed according to the altitude of the sun (when it is No in step S4, step S16, S17), an incident angle irrespective of the altitude of the sun Control and maximum angle control may be performed. Even in such a case, the power generation is efficient because the angle is the maximum sum of the power generated in the first light receiving surface 41 and the second light receiving surface 42 in the solar cell panels included in the solar cell panel group 4. Can be done automatically.

  The control unit 6 of the above embodiment determines whether or not automatic control is turned on or off based on input via a touch panel or input via the Internet, but turns on automatic control when a predetermined on time (for example, 7:00) is reached. The automatic control may be turned off when a predetermined off time (for example, 19:00) is reached. Moreover, although the control part 6 of the said embodiment acquired the electric power generation amount in the 1st light-receiving surface 41 and the 2nd light-receiving surface 42 with the voltage sensor and current sensor which were provided in the solar cell panel group 4, this sensor was used by another sensor. Such a power generation amount may be acquired. Furthermore, the control unit 6 of the above embodiment determines whether or not the amount of solar radiation is a certain amount or more in step S11 of FIG. 6 and performs the maximum angle control as necessary. It may be determined whether the power generation amount (for example, the actual power generation amount in the first light receiving surface 41 or the second light receiving surface 42 that can be acquired by the power sensor) is a certain amount or more, and maximum angle control may be performed as necessary. .

  In the reflection plate 7 of the above embodiment, the inclination angle is fixed and the position in the Z-axis direction is fixed with respect to the support portion 5, but these may not be fixed. For example, the control unit 6 may control the movement of the reflecting plate 7. In this case, the control unit 6 may control the reflector 7 so as to interlock with the support unit 5. Moreover, in this case, it is possible to more efficiently generate power with the solar cell panels included in the solar cell panel group 4. Further, at least one of the center b71 and the end 72 of the reflecting plate 7 may be curved. For example, the surface of the reflecting plate 7 may have a plurality of curved surfaces as a corrugated shape, or the surface may have a stepped shape or a diamond shape (may have a plurality of inclined surfaces). . In this case, when the surface of the reflecting plate includes a curved surface or an inclined surface, the curved surface or the inclined surface reflects sunlight at an angle different from the incident angle, in other words, diffusely reflects sunlight. More light is reflected by the two light receiving surfaces 42. Furthermore, the surface of the reflecting plate 7 may be mirror-finished. In this case, the solar cell receives more light from the sunlight incident on the surface on which the highly solar reflective coating is applied or the surface that is mirror-finished. Reflects on the panel. Thus, since the surface of the reflecting plate 7 efficiently reflects sunlight on the first light receiving surface 41 and the second light receiving surface 42 of the solar cell panel, power generation can be performed more efficiently.

  The elevation angle and azimuth angle of the first light receiving surface 41 of the solar cell panels included in each solar cell panel group 4 may be changed individually in addition to changing in a lump. Moreover, although the solar power generation device 1 of the said embodiment was provided with three solar cell panel groups 4, even if it is provided with one, two, or four or more solar cell panel groups 4. Good. Each solar cell panel group 4 includes three solar cell panels, but may include one, two, or four or more solar cell panels.

  One of the modifications of the solar power generation device 1 will be described below with reference to FIGS. The solar power generation device 1 includes one solar cell panel group 4. Further, the solar power generation device 1 includes a mount 3 provided on the installation surface and provided with a through-hole penetrating in the Z-axis direction in the center, a reflector 7 provided below the solar cell panel group 4, and a mount 3, the solar cell panel group 4, and the support part 5 each connected to the reflecting plate 7 (refer FIG. 8).

  The support portion 5 includes a shaft portion 513 inserted through the through hole of the gantry 3 in the Z-axis direction, a main body portion 500 connected to the shaft portion 513, and a support body 502 that supports the reflector 7 and the solar cell panel group 4. , And an elevation angle changing device 501 that connects the main body 500 and the support body 502 and extends in the horizontal direction. The support unit 5 includes an electric motor (first actuator) capable of rotating the main body unit 500 around the shaft portion 513 as a rotation axis, and a rotation detector (for example, a potentiometer) capable of detecting the position of the main body unit 500. Have. The main body 500 has a flat plate-like portion extending in the horizontal direction (expanding along the installation surface) and arm-like portions respectively extending from two opposing portions in the horizontal direction of the portion on the flat plate. The elevation angle changing device 501 can rotate the support body 502 about the central axis of the elevation angle changing device 501 as a rotation axis. The support 502 has a rectangular plate-like first portion 503 and a first portion 503 extending upward from an outer edge of the first portion 503 with respect to the portion on the rectangular flat plate (for example, inclined by 50 °). A second part 504, a third part 505 having a rectangular frame shape extending from the upper edge of the second part 504, a fourth part 506 extending from the corner of the third part toward the center, and an inner end of the fourth part 506 A fifth portion 507 having a rectangular frame shape extending from the edge. The third part 505 is located below the fifth part 507 and is provided so as to surround the fifth part 507 in plan view (viewed in the Z-axis direction) (see FIG. 7).

  The solar cell panel group 4 includes a plurality of solar cell panels 43. The several solar cell panel 43 is arrange | positioned in the state mutually spaced apart. Specifically, a slit 44 is provided between adjacent solar cell panels 43 (for example, between two solar cell panels 43). The outer edge of the solar cell panel group 4 is supported by the fourth part 506 and the fifth part 507 of the support 502. For example, the outer edge of the second light receiving surface 42 (the surface facing the reflecting plate 7) of the solar cell panel 43 is fixed in a state of being placed on the fifth portion 507 (see FIG. 8). The solar cell panel group 4 is disposed on the inner side of the third portion 505 of the support body 502 in plan view (see Z-axis direction, see FIG. 7). In addition, the solar cell panel group 4 is arranged with a gap with respect to the third portion 505. Specifically, the solar cell panel group 4 is arranged in a state where a gap is formed with respect to the third portion 505 on the entire circumference of the solar cell panel group 4.

  The azimuth angle of the first light receiving surface 41 of the solar cell panel 43 can be changed by rotating the support body 502 about the shaft portion 513 as a rotation axis. Further, the elevation angle of the first light receiving surface 41 of the solar cell panel 43 can be changed by rotating the support body 502 with the central axis of the elevation angle changing device 501 as the rotation axis. Specifically, the elevation angle of the first light receiving surface 41 of the solar cell panel 43 is 90 ° to 45 °, as shown in FIGS. 9, 10, and 11. And can be changed to 0 °.

  The reflection plate 7 is fixed to the support body 502 and is fixed to the main body 500 and the solar cell panel group 4 via the support body 502. Therefore, the reflecting plate 7 rotates in conjunction with the rotation of the support body 502 with the center of the elevation angle changing device 501 as the rotation axis. Further, the reflecting plate 7 rotates in conjunction with the rotation of the main body 500 and the support body 502 with the shaft body 513 as a rotation axis. In addition, the relative position with respect to the solar cell panel group 4 of the reflecting plate 7 is always fixed.

  Further, the reflecting plate 7 includes a first reflecting panel 731 continuously disposed in an upper region (for example, an upper half region) of the four second portions 504 of the support body 502, and the first reflecting panel 731 and the lower portion thereof. A second reflection panel 732 that is continuous and continuously disposed in a lower region (for example, a lower half region) of the four second portions 504. The 1st reflective panel 731 and the 2nd reflective panel 732 are arrange | positioned under the clearance gap between the solar cell panel group 4 and the support body 502 (for example, 3rd site | part 505). The first reflective panel 731 has a flat plate shape. The second reflection panel 732 has a plate shape that is curved to be convex upward. Therefore, light incident from the periphery of the solar cell panel 43 (light incident on the outside of the solar cell panel 43) is reflected by the first reflection panel 731 and the second reflection panel 732 to the second light receiving surface 42 of the solar cell panel 43. (Refer to the alternate long and short dash line in FIG. 12). Thereby, the electric power generation with the solar power generation device 1 can be performed efficiently.

  In addition to this, the reflection plate 7 includes, for example, a third reflection panel 733 disposed in the center of the first portion 503 of the support body 502. The third reflection panel 733 is disposed below the slits 44 between the solar cell panels 43. Specifically, the third reflection panel 733 has a long plate shape along the slit 44. The width W2 of the third reflective panel 733 in the arrangement direction of the solar cell panels 43 is, for example, wider than the width of the slit 44 (width in the arrangement direction of the solar cell panels 43) W1. The surface of the third reflection panel 733 has a plate shape curved so as to be convex upward. Therefore, the light incident on the slits 44 between the solar cell panels 43 can be reflected on the second light receiving surface 42 of the solar cell panel 43 by the first reflective panel 731 and the second reflective panel 732 (dotted line in FIG. 12). reference). Thereby, the electric power generation with the solar power generation device 1 can be performed more efficiently.

  Hereinafter, the main structure of the solar power generation device 1 according to this modification will be described collectively. The solar power generation device 1 is a sun having a gantry 3 installed on the installation surface 2, a first light receiving surface 41 located on the front side, and a second light receiving surface 42 located on the back surface, disposed above the gantry 3. The battery panel 43, the support unit 5 that supports the solar cell panel 43 in a state where the angle of the solar cell panel 43 can be changed above the mount 3, and the reflector 7 that is installed below the solar cell panel 43 . In this solar power generation device 1, a gap is provided between the solar cell panel 43 and the support portion 5 (for example, the third portion of the support body 502). In the plan view, this gap and at least a part of the reflecting plate 7 overlap each other. A part of the reflection plate 7 (second reflection panel 732) is curved so as to be convex upward.

  Further, the solar power generation device 1 includes a plurality of solar cell panels 43, and slits 44 are provided between the plurality of solar cell panels 43. Below the slit 44, the third reflection panel 73 of the reflection plate 7 is disposed. In the plan view, at least a part of the slit 44 and the third reflection panel 73 overlap each other. The upper surface of the third reflective panel 73 is curved so as to be convex upward.

  Since this solar power generation device 1 is also controlled by the maximum angle control shown in the flowchart of FIG. 6, the angles of the solar cell panels included in the solar cell panel group 4 are the first light receiving surface 41 and the second light receiving surface 42. Therefore, power generation can be performed efficiently.

  Moreover, also in this solar power generation device 1, since the maximum angle control is performed after the incident angle control for controlling the azimuth angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4, the solar cell panel Control that maximizes the total sum of the power generated in is quickly performed.

  Furthermore, also in the solar power generation device 1 of the present embodiment, after the incident angle control to match the normal direction of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 with the incident direction of sunlight, The elevation angle of the first light receiving surface 41 of the solar cell panel included in the solar cell panel group 4 (the angle of the first light receiving surface 41 with respect to the installation surface 2) is the first light receiving surface of the solar cell panel included in the solar cell panel group 4. 41 and the second light receiving surface 42 are subjected to maximum angle control that matches the angle at which the total sum of power is maximized, so that control that maximizes the sum of power generated by the solar cell panel is performed quickly and reliably.

  A part of the surface 73 of the reflecting plate 7 (for example, the second reflecting panel 731) may be mirror-finished. In addition, the azimuth angle and elevation angle of the first light receiving surface 41 of the solar battery panel 43 of the solar power generation device 1 may be manually controlled instead of automatically controlled.

  In the solar power generation device 1 of the above-described embodiment, the solar radiation sensor is provided in the support portion 5, but may be provided in another location.

  DESCRIPTION OF SYMBOLS 1 ... Solar power generation device, 2 ... Installation surface, 3 ... Mount, 30 ... Mount frame part, 31 ... Reinforcement part, 32 ... Leg part, 320 ... Fixed part, 321 ... Connection part 4, 4a, 4b, 4c ... Solar cell panel group 41: first light-receiving surface, 42: second light-receiving surface, 43 ... solar cell panel, 44 ... slit, 5 ... support, 500 ... main body, 501 ... elevation changing device, 502 ... connection body, 503 ... First part 504 ... Second part 505 ... Third part 506 ... Fourth part 51 ... First support part 510 ... Frame part 511 ... Wheel part 512 ... Plate part 513 ... Shaft part 52 ... second support part, 520 ... main body part, 521 ... link part, 5210 ... main body area, 5211 ... support area, 5212 ... connection area, 522 ... connection part, 5220 ... rotating shaft, 523 ... electric cylinder, 524 ... base Part, 6 ... control unit, 60 ... processing , 61 ... storage part, 7 ... reflector, 71 ... central, 72 ... end 73 ... surface, 731 ... first reflecting panel, 732 ... second reflecting panel, 733 ... third reflective panel, 74 ... rear surface

Claims (4)

A stand installed on the installation surface;
A solar panel having a first light-receiving surface located on the front side and a second light-receiving surface located on the back surface, disposed above the gantry,
Above the gantry, in a state where the angle of the solar cell panel can be changed, a support part for supporting the solar cell panel;
A control unit for controlling an angle change of the solar cell panel by the support unit,
The control unit is configured so that a normal direction of the first light receiving surface of the solar cell panel is a first power that is power obtained at the first light receiving surface and a second power that is power obtained at the second light receiving surface. A solar power generation apparatus that performs maximum angle control for controlling the angle change of the solar battery panel so that the total power that is the sum of the two becomes the maximum.   The controller receives the first light reception of the solar cell panel before the maximum angle control so that at least the azimuth angle direction of the first light receiving surface of the solar cell panel matches the azimuth angle direction of sunlight. The solar power generation device of Claim 1 which performs incident angle control which controls the change of the azimuth angle of a surface.   The controller controls the angle of the first light receiving surface of the solar cell panel so that the normal direction of the first light receiving surface of the solar cell panel matches the incident direction of sunlight before the maximum angle control. In the maximum angle control after the incident angle control, at least the elevation direction of the first light receiving surface of the solar cell panel with respect to the installation surface is set to the maximum total power. The solar power generation device of Claim 1 or 2 which controls the change of the elevation angle of the said 1st light-receiving surface of the said solar cell panel so that it may become a direction which becomes. A reflector disposed below the solar cell panel;
The surface of the said reflecting plate contains at least one of the surface by which the highly solar reflective paint was apply | coated, a curved surface, an inclined surface, and the surface by which the mirror surface process was made | formed. The solar power generation device described in 1.

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